ON THE ANATOMY OF CERTAIN SPECIES OF 

 SOLENIDAE. 



By H. H. bloomer. 



(Plate X.) 



I am indebted to the late I'rofessor E. von. Martens of the Berlin 

 Museum, fur the privilege of examining the specimens now described which 

 he so kindly placed at my disposal. Wh^n sending them he gave the 

 following particulars : — 



"2. Solerurtutt (lotjthrij/, Lam. Peru, from I'rofessor iHmker's collection. 

 2. Solen corneals, Lam. Lidian sea, from the collection of Lamare 

 Piegnot made about 1836. 



1. Si)leH (jouldi, Conr. Yeddo = Tokio, Japan, collected by Professor 

 Hilgendorf in 1873 — 76- 



2. CuIteJlus jacanini^, Lam. Singa]3ore, collected by myself in 

 1860—62. 



2. Solendelertfi-oti, Chemn. ( = /nvri.-<si)iiu.'<, ALirts., 1865), Singai)ore, 

 collected by myself at the same time. 



1. iSoIen (Galena) nidis, C. B. Adams, Panama, very near to »S'. 

 anihi(juus, Lam. from the West Indies." 



Solecuptus dombeyi, i-im. 

 PI. X, figs. I — 3. 



External chavaden^. — The animal curves outwardly along the dorsal 

 surface. The length from the anterior side of the anterior adductor muscle 

 to the posteiior side of the posterior adductor muscle is 51 millini. and the 

 depth 19. 



The mantle lobes are joined together at the anterior side of the anterior 

 adductor muscle. Then, separately, they pass with a curve around the 

 anterior end, and proceed posteriorly until they reach a position a little 

 anterior to the proximal portion of the siphon, where they become con- 

 cresced, consequently, the pedal aperture occupies the anterior and nearly 

 the whole of the ventral surface. Laterally, and some distance anteriorly 

 to the posterior edge, the mantle lobes are connected o 1 their inner sides 

 with the proximal portion of the siphon, which enal)les them to contain the 

 free portions of the siphon when contract(_(l, and the greater portion of 

 them when extended (fig. i. P.L.P.) 



In the specimens examined the free portions of the siphon are nearly 

 enclosed, the exhalent (fig. i Ux. S.') portion being contracted, and folded 

 on itself, and the inhalent one (fig, i. In. S.') partly inverted, so that the 



