vm, a, 4 Smith: Fossil Invertebrate Fauna 293 



These tubular forms are so characterless, especially in the 

 fossil state, that it is particularly difficult to establish new species 

 among them. 



Locality : Barrio of Mesaba, near Danao, Cebu. 



Formation: Miocene limestone. 



ARTHROPODA 



THALASSINIDiE 



CALLIANASSA Leach 



Body with the exception of the claws soft skinned; cephalo- 

 thorax small, compressed, abdomen very long and narrow, first 

 segment thin and short; caudal fin large; the claws of the first 

 pair of legs large and unequal, laterally much flattened, the 

 sharp edges set with fine serrations; movable finger joined to 

 the propodite and surrounded on both sides by a collar-shaped 

 process ("ball and socket" joint) ; carpodite straight, united 

 with the propodite, of like shape and width as this, but shorter 

 and rounded and tapered posteriorly; the rest of the parts of 

 the claws markedly narrower and smaller. By the equal develop- 

 ment of the carpo- and propodite the claws of Callianassa are 

 distinguished from those of other Crustacea. Recent and fossil 

 from the Jura on. (Zittel.) 



Callianassa dijki K. Mart. Plate XIX, figs. 3 and 4. 



These were compared directly with specimens in the Leiden 

 collection of Javan fossils and found to be quite the same. The 

 two parts shown here are propodites; that is, the joints of the 

 claw next to the movable finger or pincer. 



I have never found any other parts of this animal save the 

 two last joints of the claw. They are quite common in Cebu in 

 the shale just above the large Compostela coal seam. 



Locality: Old Compostela coal mines, Mount Licos, Cebu, No. 

 289. 



Formation: Miocene shale. 



WORKS CONSULTED 



Abella y Casariego, D. E. Descripcion fisica, geologica y minera en bos- 



quejo de la Isla de Panay. Manila (1890). 

 Idem. Manantiales minerales de Filipinas. Manila (1893), 144. 

 Adams, G. I. Geological reconnaissance of southwestern Luzon. Phil. 



Journ. Set., Sec. A (1910), 5, 57-116, 13 pis., 10 figs., 2 maps. 

 Andrews, C. W., et al. Monograph of Christmas Island. London (1900), 



lvol. 



