514 



PROCEEDINGS OF THE NA TTONAL MUSEUM. 



VOL. XXVIII. 



l^oth pairs ot" g-lands arc dark brown in color, ])ut while the 

 Hrst pair arc partially or wholly concealed amonu- the niu.sclcs and 

 appenda.o-cs ot" that portion of the carapace, tiie second pair stand out 

 conspicuously in doi'sal view, sii\c(^ they are close to the dorsal sur- 

 face. In some species they are ([uite small and shaped like a comma, 

 the larg-e, rounded body lyino- upon the upper surface of the intestine, 

 while the cur\ed tail bends around laterally to the ventral surface of 

 the intestine, where it o-ives off a duct leading- to the posterior end of 

 the stomach. 



This is tiie condition in LepeophthelvKK pectoral !x^ while in Calufiis 

 r(ii>((,r the uland is nuich laroer, horseshoe-shaped, and entirely free 

 from the intestine, thouo-h lying close to it. The duct here is given 



oil' from the outer arm of the 

 horseshoe, turns downward and 

 then forward to enter the stom- 

 ach (tig. 22). 



In many of the other species 

 and genera these glands are of 

 a tlecidedly different shape if the 

 brown bodies visible in the tho- 

 racic areas are an}' criterion. 

 Thus by a reference to the plates 

 of the new species here published 

 it will ]>e seen that in Li-pcopli- 

 fhc'irnx cd'irdi'ihi, L. longi/pes^ 

 L. cJi! I crisis, and Z. parvhenh'is 

 as well as in Calhjus pelarnydis 

 these brown spots show as quite 

 regular oval or elliptical bodies 

 flattened on the inner sides. In 

 (jj<>/<>j>(>t<'s onHitiix they are ver}^ 

 regular ellipses without being 

 tiattened at all. In C<(lUjuf< l><»i!f<> they are very suiall and seem fused 

 on the mid line into a l)ean-shaped body. In three species of CaJlcpis — 

 latlfronx^ e,vUix, and (dinncnx — they are comma-shaped with the small 

 end pointing forward, and in the last species also outward. \\\ ( '((J'kjuh 

 mutdhUis the}' are even uidike in tht^ two sexes, having a clul)-shape 

 in the male, the two clubs heing strongly curved with their small ends 

 toward the front and thcii- concave sides toward each otlun*. In the 

 fcMuale they have the shape of a spherical triangle, the a})ices pointed 

 backward, with a small sphei-ical enlai'gement on the outer side at 

 al)out the center. 



In J.t'pcojddhdriis /i/j>p<Hj/<>ssl they have the form of paragraph 

 marks ])laced back to back. In the male of (^ald/ux sch/xfoin/.r t\iQy 

 show \\\) as hatchet-shaped bodies, widely separated, and the handles 



Fig. 22. — Posterior digestive glands of Caligis 

 KAPAX. d, duct: g, gland; m, muscles; s, stomach. 



