124 



RECORDS OF THE AUSTRALIAN MUSEUM. 



the seminal dnct, to which no author has ever alluded. The 

 great ma jority of the species of Achulom'cKs inhabit the Celebes 

 Archipelag-o. 



In order to avoid repetition in exposing, after each description, 

 the relationship of the new species with the forms already 

 known, the species have been divided into four groups, ac- 

 cording to regions, and an attempt has been made to tabulate 

 them. Thus the tables are four in number, corresponding to 

 the following areas : — I., Continental Australia ; II., New 

 Guinea; III., Bismarck Archipelago (including New Britain 

 and New Ireland) to the Solomon Islands ; IV., Fiji. The 

 tables will be found at the end of the present memoir. 



DiNEMATOCKicus (Cladiscocricus) FALCATUS (Silvestri, 1897). 

 (Plate xvi., figs. 29-44 ; with Figs. 30, 31). 



IihiiKirn'ciifi falcatus, Silvestri, 1897, Abh. Ber. K. Zool. 

 Mus. Dresden, '1896-1897, vi.. No. 9, p. 6. 



Prof. Silvestri's description runs thus : — 



" (J : Color brunneo-rufescens totus. Caput totuni laeviga- 

 " turn. Antennge ? Oculi subcirculares, ocellis distinctis c. 

 "40. Somita : collum lateribus sat angustatis, rotundatis ; 

 " somita coetera tota laevia, subtus tantum striis nonnullis. 

 " Scobina in somitis 9-ad penultima. Somitum praeanale cauda 

 " acuta, valvula anales vix vix superante. Somitum anale 

 " valvulis parum compressis, sternito ti'iangulari, apice acuto. 

 " Pedes paris 3-5 articulo primo processu sat longo et lato aucto. 

 " Organ um copulativum : par anticum (fig. 30) lamina antica 

 '• niinoi'e longitudine quam ilia laterum, apice minus attenuato, 

 " par internum (fig. 31) processu longo falciformi constituto, 

 " ad basim processu parvo acuto auctnm. Somitotum numerus 

 "53. Long. Corp. mm. 67; lat. coi'p. mm. 7. Hab. Nova 

 " Hollrindia : ({avndah." 



Fig. 30. 



FiiJ. 31. 



