CEPHALOPODS OF THE PHILIPPINE ISLAI^TDS 147 



Measurements and indices of 10 male and 3 female specimens of 

 Liocranchia reinhardfi (Steenstriip) are: 



OLI 20.6 19.5 29.2 19.2 24.9 15.2 18.6 17.6 24.1 20.5 19.7 14.7 25.0 



The head is broad and compact with large and prominent eyes. 

 The eyelids are very small, round, and puckered, with a small anterior 

 sinus. 



The fins are large and terminal, their outline describing a transverse 

 oval, their combined width 30.0 to 40.0 percent of the mantle length, 

 the FLI 25.0 to 33.0. Posteriorly there is a slight indentation in the 

 midline. 



The funnel is large, free only in the anterior third of its length, and 

 reaches to the anterior margin of the eyeballs. The funnel organ is 

 composed of a triangular dorsal pad, with a central and two lateral 

 lamellae as figured by Sasaki (1929, pi. 26, fig. 2) and with two ventral 

 pads which are lunate but have the posterior horns widened on the 

 dorsal edge. 



The arms are short (MAI 15.0-23.0), unequal, in the order 3.4.2.1, 

 the first arms much the shortest and united for over half of their 

 length by a web which also connects the next two pairs. A small 

 inconspicuous protective membrane borders the suckers of all the 

 arms. In addition, the third arms are somewhat compressed, keeled, 

 and equipped with a low swimming membrane. The fourth arms also 

 have a low swimming membrane on their outer border. The arm 

 suckers are biserial throughout in the female and fairly large, the 

 suckers covering nearly the entire length of the arm. In the male 

 the distal fourth of the third arms bears abruptly much smaller suckers 

 arranged in four to eight rows. As a result, the tip of the third arm 

 in the males tends to curl over. In the larger specimens available to 

 me the arm sucker rings appear to be entire with occasional slight 

 indentations. In the largest specimens, there is no trace of the 

 surrounding papillated area described and figured by Sasald. 



In the males the right or left ventral arms are hectocotylized. 

 Previous authors have all stated that the left ventral arm alone is 

 strongly modified; Chun gives this modification as one of the key 



