Identifier: textbookofcompar01lang (find matches)
Title: Text-book of comparative anatomy
Year: 1898 (1890s)
Authors: Lang, Arnold, 1855-1914 Bernard, Henry Meyners Bernard, Matilda Haeckel, Ernst Heinrich Philipp August, 1834-1919
Subjects: Anatomy, Comparative
Publisher: London, New York, Macmillan and Co.
Contributing Library: MBLWHOI Library
Digitizing Sponsor: MBLWHOI Library

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
r of sexual glands and originally paired ducts from these glands. First Sub-race or Sub-phylum. Branehiata.—Aquatic animals. With the exception of the anteriorantennae all the appendages are morphologically biramose. Respi-ration cutaneous or by means of gills, which are almost alwaysappendages of the basal joints of the limbs. SINGLE CLASS. Crustacea. First appendage to the Sub-race Branehiata : The Trilobites, Gigantostraca,Hemiaspidae, and Xiphosura. Second appendage to the Sub-race Branehiata: The Pantopoda or Pycno-gonidae. Second Sub-race or Sub-phylum. Tracheata.—Land animals. Limbs not biramose, consisting of asingle row of joints. Respiration by means of trachea? (tubularor book-leaf tracheae). CLASS I. Protracheata. CLASS II. Antennata (Myriapoda and Hexapoda).CLASS III. Chelicerota sive Arachnoidea. Appendage to the Phylum of the Arthropoda.The Tardigrada or Bear animalcules. 288 VUMlAUA TIVE ANA TOMY CHAP. THE CRUSTACEA.Systematic Review. Sub-Class I. Entomostraca. UCL
Text Appearing After Image:
Fig. 191.—Branchipus stagnalis, male. PI, Anterior an-tenna; ; ao, posterior antenute, seizing antennae with accessoryappendages ; ?<«, unpaired eye ; i, liver ; md (above), mandible ;sd, shell gland ; h, heart or dorsal vessel; oil, slit-like apertures(ostia) of the heart; md (below), intestine ; ji, penis ; 6r, branchialsac ; 6rb branchial leaflet; po, paired stalked eyes (after Glaus). The trunk consists of avarying number of segments.We can here often distin-guish an anterior divisionbearing limbs from a pos-terior division which hasno such appendages. Eachdivision, however, consists ofa varying number of seg-ments. The genital aper-tures usually lie between thetwo divisions of the trunk.A dorsal shield is oftenpresent, and is developed invarious ways. The limbsare very variously shaped.Besides the usual lateraleyes, the unpaired frontaleye of the Nauplius larva isretained by the adult animal.A masticatory stomach iswanting. A Nauplius larvais hatched from the egg.Mostly sma

Note About Images