HOPLOCARIDA STOMATOPODA 



thoracic legs inside, while the abdomen is pushed out through 

 an opening of the Pyrosoma case behind, and l>y its alternate 

 flexion and extension drives the boat forwards, the water beiim 

 thus made to enter at the front aperture and supply the female 

 and her brood with nourishment. 



DIVISION 3. HOPLOCAEIDA. 



The carapace leaves at least four of the thoracic somites 

 distinct. The eyes are pedunculate. The mandibles are without 

 a lacinia mobilis : there are no oostegites, the eggs being carried 

 in a chamber formed by the maxillipede-. The hepatic caeca 

 are much ramified, the heart is greatly elongated, stretching 

 through thorax aud abdomen, with a pair of ostia in each 

 segment. The spermatozoa are spherical, and there is a compli- 

 cated and peculiar metamorphosis. 



Order. Stomatopoda. 



The Stomatopoda are rather large animals, occasionally reach- 

 ing a foot in length, all of which exhibit a very similar structure: 

 mantis and & dcsmarcsti are found on the south coast of 



M 



Ki... '.'>. l.atrral vii-w of Myi/ ( 7/,' >p.. \ 1. A.L .!..'. 1-t ami 'Jiul antenn.. 

 * 1-t uMoiuinal segnifin : .1 .-. i'.ili al'-loniinal a]'pfii'l.i_ .-plialotl; 



't' tlie lii-ail fu>cil with the lirst live tlmra '>!- : A', eye : .'/. 



' : 7'. tcNuii. Af.-v tiri-Ntai'i-kcv aiul <rtiiianu. 



England not very t'reipieiitlv : but they are very common ill the 



Mediterranean. li\ in-- in holes or in the sand within tlie litinral 

 xone of shallow water. Thev ditfei from all the other Mala- 



